Record Information
Version1.0
Creation Date2016-05-22 03:43:22 UTC
Update Date2016-11-09 01:15:28 UTC
Accession NumberCHEM016775
Identification
Common NameMethaqualone
ClassSmall Molecule
DescriptionA member of the class of quinazolines that is quinazolin-4-one substituted at positions 2 and 3 by methyl and o-tolyl groups respectively. A depressant that increases the activity of the GABA receptors in the brain and nervous system, it is used as a sedative and hypnotic medication. It became popular as a recreational drug and club drug in the late 1960s and 1970s.
Contaminant Sources
  • STOFF IDENT Compounds
  • ToxCast & Tox21 Chemicals
Contaminant TypeNot Available
Chemical Structure
Thumb
Synonyms
ValueSource
MetacualonaChEBI
MethaqualonumChEBI
Methaqualone hydrochlorideMeSH
MetolquizoloneMeSH
Hydrochloride, methaqualoneMeSH
OptimilMeSH
OrtonalMeSH
QuaaludeMeSH
Wallace brand OF methaqualone hydrochlorideMeSH, HMDB
Chemical FormulaC16H14N2O
Average Molecular Mass250.295 g/mol
Monoisotopic Mass250.111 g/mol
CAS Registry Number72-44-6
IUPAC Name2-methyl-3-(2-methylphenyl)-3,4-dihydroquinazolin-4-one
Traditional Namesonal
SMILESCC1=CC=CC=C1N1C(C)=NC2=CC=CC=C2C1=O
InChI IdentifierInChI=1S/C16H14N2O/c1-11-7-3-6-10-15(11)18-12(2)17-14-9-5-4-8-13(14)16(18)19/h3-10H,1-2H3
InChI KeyJEYCTXHKTXCGPB-UHFFFAOYSA-N
Chemical Taxonomy
Description belongs to the class of organic compounds known as quinazolines. Quinazolines are compounds containing a quinazoline moiety, which is made up of two fused six-member aromatic rings, a benzene ring and a pyrimidine ring.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassDiazanaphthalenes
Sub ClassBenzodiazines
Direct ParentQuinazolines
Alternative Parents
Substituents
  • Quinazoline
  • Pyrimidone
  • Toluene
  • Monocyclic benzene moiety
  • Pyrimidine
  • Benzenoid
  • Heteroaromatic compound
  • Lactam
  • Azacycle
  • Organic nitrogen compound
  • Hydrocarbon derivative
  • Organic oxide
  • Organopnictogen compound
  • Organooxygen compound
  • Organonitrogen compound
  • Organic oxygen compound
  • Aromatic heteropolycyclic compound
Molecular FrameworkAromatic heteropolycyclic compounds
External Descriptors
Biological Properties
StatusDetected and Not Quantified
OriginNot Available
Cellular LocationsNot Available
Biofluid LocationsNot Available
Tissue LocationsNot Available
PathwaysNot Available
ApplicationsNot Available
Biological RolesNot Available
Chemical RolesNot Available
Physical Properties
StateNot Available
AppearanceNot Available
Experimental Properties
PropertyValue
Melting PointNot Available
Boiling PointNot Available
SolubilityNot Available
Predicted Properties
PropertyValueSource
Water Solubility0.041 g/LALOGPS
logP2.54ALOGPS
logP3.17ChemAxon
logS-3.8ALOGPS
pKa (Strongest Basic)-1.2ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count2ChemAxon
Hydrogen Donor Count0ChemAxon
Polar Surface Area32.67 ŲChemAxon
Rotatable Bond Count0ChemAxon
Refractivity77.11 m³·mol⁻¹ChemAxon
Polarizability27.31 ųChemAxon
Number of Rings3ChemAxon
Bioavailability1ChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleYesChemAxon
MDDR-like RuleNoChemAxon
Spectra
Spectra
Spectrum TypeDescriptionSplash KeyView
GC-MSGC-MS Spectrum - EI-B (Non-derivatized)splash10-0f79-8490000000-13cbb7614902871f6c7dSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableSpectrum
Predicted GC-MSPredicted GC-MS Spectrum - GC-MS (Non-derivatized) - 70eV, PositiveNot AvailableSpectrum
LC-MS/MSLC-MS/MS Spectrum - 35V, Positivesplash10-0udi-0390000000-5ee4c5323c6904a0053aSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0udi-0090000000-84dd028e73e20d205e12Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0udi-0190000000-e241cb48258c40025975Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-0l93-9640000000-8d5fe1eb473f263cec6aSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0002-0090000000-9445b2b2fa1802832c24Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0002-0090000000-0d4d1a068e0723c4eee3Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-014l-5920000000-e974f5d2735b2bfd8e11Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Negativesplash10-0002-0090000000-0e52326c2723b691f84fSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Negativesplash10-0002-0090000000-0e52326c2723b691f84fSpectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Negativesplash10-014l-2920000000-01c4f3f6d682f36b0fa1Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 10V, Positivesplash10-0udi-0090000000-cbbd39c1951c83827826Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 20V, Positivesplash10-0udi-0090000000-cda4f7921117abef56b9Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - 40V, Positivesplash10-014i-5910000000-1775ab3ba65963d35239Spectrum
Toxicity Profile
Route of ExposureNot Available
Mechanism of ToxicityNot Available
MetabolismNot Available
Toxicity ValuesNot Available
Lethal DoseNot Available
Carcinogenicity (IARC Classification)Not Available
Uses/SourcesNot Available
Minimum Risk LevelNot Available
Health EffectsNot Available
SymptomsNot Available
TreatmentNot Available
Concentrations
Not Available
DrugBank IDDB04833
HMDB IDHMDB0240285
FooDB IDNot Available
Phenol Explorer IDNot Available
KNApSAcK IDNot Available
BiGG IDNot Available
BioCyc IDNot Available
METLIN IDNot Available
PDB IDNot Available
Wikipedia LinkMethaqualone
Chemspider ID6055
ChEBI ID6821
PubChem Compound ID6292
Kegg Compound IDC07560
YMDB IDNot Available
ECMDB IDNot Available
References
Synthesis ReferenceNot Available
MSDSNot Available
General References
1. https://www.ncbi.nlm.nih.gov/pubmed/?term=11672968
2. https://www.ncbi.nlm.nih.gov/pubmed/?term=15846700
3. https://www.ncbi.nlm.nih.gov/pubmed/?term=16566774
4. https://www.ncbi.nlm.nih.gov/pubmed/?term=16861151
5. https://www.ncbi.nlm.nih.gov/pubmed/?term=22019312
6. https://www.ncbi.nlm.nih.gov/pubmed/?term=26056160
7. https://www.ncbi.nlm.nih.gov/pubmed/?term=2701316
8. https://www.ncbi.nlm.nih.gov/pubmed/?term=28166217
9. https://www.ncbi.nlm.nih.gov/pubmed/?term=3397524